body {
	background-color: #dadaaf;
}
div.main_section {
	width:920px;
	background-color:#fff;
	margin:0px auto;
	padding:20px;
}
div.top_section {
	background-color:#C90;	
}
div.middle_section {
	background-color:#9F0;	
}
div.bottom_section {
	background-color:#FCF;	
}